MCS Supports Ofgem’s Replacement Product Process

In August 2019, Ofgem introduced a new ‘Replacement Product’ process to provide assurance that an MCS certified system that has had components replaced is still eligible for RHI.

In these situations, Ofgem requests that the consumer asks their MCS installer, who has performed the product replacement, to complete a Replacement Product Declaration Form (RPDF). The form must be returned to Ofgem, who will update their records, and RHI payments to the participant will resume. BEIS intend to update the RHI scheme regulations in 2022 to allow for this process.

The Replacement Product Declaration Form applies in instances when only the heat-generating component (e.g., the heat pump, or boiler) is replaced and not the complete installation. In this scenario, the installer cannot issue a new MCS certificate, because an MCS certificate is a ‘snapshot’ of the original system as installed on the commissioning date detailed on the certificate. The MCS certificate does not extend in scope to the replacement of any parts of that system. Therefore, the only instance in which a new MCS certificate would be issued is for an entire system replacement, including ancillary equipment.

Whilst MCS standards do not cover maintenance or repair of previously certified systems, we recognise that individual components of certified systems may need to be replaced. We therefore endorse the Ofgem Replacement Product process and would encourage MCS certified contractors to complete the Replacement Product Declaration Form (RPDF) when replacing heat-generating components of previously certified systems.

More information regarding the RPDF process and form will be released shortly in our MCS Guidance Document.

Replacement Product Declaration Form

Ofgem Open Letter – Introduction of the RPDF on the Domestic RHI

Ofgem Replacement Product Declaration Form Policy